Boss AR4000D 4000W MONO Car Amplifier + Remote + 4.5 Farad Capacitor + Amp Kit Total Power: 4000 Watts Max Power @ 1 Ohm 4000 Watts x 1 Max Power @ 2 Ohms 3000 Watts x 1 Max Power @ 2 Ohms, when strapped with same model amplifier: 8000 Watts RMS Power Ratings: